
  sfHover = function() {
    var sfEls = document.getElementById("leftnav").getElementsByTagName(
        "li");
    for (var i = 0; i < sfEls.length; i++) {
      sfEls[i].onmouseover = function() {
        this.className += " sfhover";
      }
      sfEls[i].onmouseout = function() {
        this.className = this.className.replace(new RegExp(
            " sfhover\\b"), "");
      }
    }
  }
  if (window.attachEvent)
    window.attachEvent("onload", sfHover);

